Method of making a microsphere transfer adhesive
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-065/00
B32B-037/00
B32B-009/00
B32B-033/00
B32B-005/16
B29D-007/00
출원번호
UP-0560920
(2006-11-17)
등록번호
US-7645355
(2010-02-22)
발명자
/ 주소
Bilski, Lori A.
Bailey, Dale O.
Vogel, Mark S.
Gustafson, Frederick J.
출원인 / 주소
3M Innovative Properties Company
대리인 / 주소
Jordan, Robert H.
인용정보
피인용 횟수 :
0인용 특허 :
60
초록▼
A method of making a repositionable transfer adhesive is provided. The method includes the steps of (a) providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, lower t
A method of making a repositionable transfer adhesive is provided. The method includes the steps of (a) providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, lower than the second surface; (b) providing an adhesive composition comprising microsphere adhesive and a binder adhesive; (c) coating the adhesive composition on the first surface of the release liner such that the microspheres protrude from the binder adhesive; (d) drying the adhesive composition to yield a microsphere transfer adhesive; (e) winding the release liner such that the microsphere transfer adhesive is wound inwardly and the second surface of the liner contacts the microspheres; and (f) applying pressure to the second surface of the liner.
대표청구항▼
What is claimed is: 1. A method of making a repositionable transfer adhesive comprising the steps of: providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, lower th
What is claimed is: 1. A method of making a repositionable transfer adhesive comprising the steps of: providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, lower than the second surface; providing an adhesive composition comprising a microsphere adhesive and a binder adhesive; coating the adhesive composition on the first surface of the release liner such that the microspheres protrude from the binder adhesive; drying the adhesive composition to yield a microsphere transfer adhesive; winding the release liner such that the microsphere transfer adhesive is wound inwardly and the second surface of the liner contacts the microspheres; and applying pressure to the second surface of the liner. 2. The method of claim 1 further comprising the steps of: unwinding the wound microsphere transfer adhesive such that the binder of the transfer adhesive is predominantly exposed; and laminating the microsphere transfer adhesive to a first side of a target substrate, with the binder adhesive contacting the first side of the target substrate and the microsphere of the transfer adhesive is exposed. 3. The method of claim 2, wherein the target substrate is selected from the group consisting of foam, paper, and polymeric films. 4. The method of claim 2 further comprising the step of converting the target substrate containing the laminated microsphere transfer adhesive to produce an item selected from the group consisting of a sheet, a tab, and a roll of tape. 5. The method of claim 2, wherein the laminating step exposed the target substrate and the microsphere transfer adhesive to heat and pressure. 6. The method of claim 2, wherein the target substrate includes a second side opposing the first side and wherein the method further comprises a second lamination step where a second adhesive is laminated to the second side of the target substrate. 7. The method of claim 6, wherein the second adhesive is selected from the group consisting of a repositionable pressure sensitive adhesive and a permanent pressure sensitive adhesive. 8. The method of claim 1, wherein the microsphere adhesive is a repositionable pressure sensitive adhesive and the binder adhesive is a permanent pressure sensitive adhesive. 9. The method of claim 1, wherein for a given display surface, the binder adhesive exhibits a higher tack value than the microsphere adhesive when the transfer adhesive is adhered to the display surface. 10. The method of claim 1, wherein the binder adhesive has a thickness of about one half of the average diameter of the microsphere adhesive. 11. The method of claim 1, wherein at least one of the microsphere adhesives and the binder adhesives is a polyacrylate derivative. 12. The method of claim 1, wherein in the winding step, the microsphere transfer adhesive liner is wound under tension and in the applying pressure step, the pressure is supplied from a pack roll whose surface is in contact with the second surface of the release liner. 13. The method of claim 1, wherein at least one of the microsphere adhesive and the binder adhesive in the adhesive composition is water based or solvent based. 14. The method of claim 1, wherein the release liner has a chemical coating on the first surface and no release coating on the second surface, wherein the release coating is selected from the group consisting of silicone polymers, fluoropolymers, polyurethanes, polyacrylates, copolymers thereof and combinations thereof. 15. The method of claim 1, wherein the release liner has a release coating on at least one of the first and second surfaces, the release coating selected from the group consisting of silicone polymers, fluoropolymers, polyurethanes, polyacrylates, copolymers thereof and combinations thereof. 16. The method of claim 1, wherein the first surface of the release liner has a release value of at least 20 gram/inch less than the second surface as measured using a Tape Release Test. 17. The method of claim 1, wherein the binder adhesive accumulates at the first surface of the release liner. 18. The method of claim 1 wherein the winding and the applying pressure steps occur nearly simultaneously. 19. The method of claim 1, wherein the microsphere adhesive is a blend of two or more microsphere adhesives. 20. The method of claim 1, wherein the binder adhesive is a blend of two or more permanent pressure sensitive adhesives. 21. A transfer adhesive made by a process comprising the steps of: providing a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, less than the second surface; providing an adhesive composition comprising microsphere adhesive and a binder adhesive; coating the adhesive composition on the first surface of the release liner such that the microspheres protrude from the binder adhesive; drying the adhesive composition to yield a microsphere transfer adhesive; and winding the release liner under tension such that the microsphere transfer adhesive is wound inwardly and the second surface of the liner contacts the microspheres. 22. A roll of transfer adhesive comprising: a release liner having opposing first and second surfaces, the first surface having a release value of at least 10 grams per inch, as measured according to the Tape Release Test, less than the second surface; and an adhesive comprising microsphere adhesive partially embedded in a binder adhesive such that a majority of the microsphere adhesive contacts the second surface of the liner and a majority of the binder adhesive contacts the first surface of the liner.
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이 특허에 인용된 특허 (60)
Eshleman Ronald J. (Stillwater MN), Abrasion-resistant transfer laminating sheet material.
Sher Frank T. ; Meixner Larry A. ; Loncar ; Jr. Francis V. ; Calhoun Clyde D., Adhesives having a microreplicated topography and methods of making and using same.
Delgado Joaquin (Stillwater MN) Goetz Richard J. (Woodbury MN) Silver Spencer F. (Woodbury MN) Lucast Donald H. (North St. Paul MN), Low trauma wound dressing with improved moisture vapor permeability.
Kantner Steven S. (St. Paul) Kumar Ramesh C. (Maplewood) Eian Gilbert L. (Mahtomedi MN), Method of making vinyl-silicone copolymers using mercapto functional silicone chain-transfer agents and release coatings.
Cooprider Terrence E. (Woodbury MN) Bailey Dale O. (White Bear Lake MN) Most Ronald W. (River Falls WI), Pressure sensitive adhesive comprising tacky surface active microspheres.
Silver Spencer F. (White Bear Lake MN) Leinen Roger W. (Woodbury MN) Delgado Joaquin (St. Paul MN), Pressure-sensitive adhesive comprising solid tacky microspheres and macromonomer-containing binder copolymer.
Mazurek Mieczyslaw H. (Roseville MN) Galkiewicz Robert K. (Roseville MN) Benson Gerald M. (Woodbury MN), Pressure-sensitive adhesives having microstructured surfaces.
Darvell Wayne K. (North St. Paul MN) Konsti Patricia R. (Oakdale MN) Klingen Jurgen (Schwalmtal DEX) Kreckel Karl W. (Haan DEX), Pressure-sensitive tape construction incorporating resilient polymeric microspheres.
Hsieh Hsieh-Chang (Kaohsiung) Wei I-Chien (Kaohsiung) Kuo Tsung-Tien (Kaohsiung TWX), Process for making tacky acrylate microparticles and use therefor.
Mazurek Mieczyslaw H. (Roseville MN) Kinning David J. (Woodbury MN) Kantner Steven S. (St. Paul MN), Radiation-curable acrylate/silicone pressure-sensitive adhesive coated tapes adherable to paint coated substrates.
Delgado Joaquin (Stillwater MN) Goetz Richard J. (Woodbury MN) Silver Spencer F. (White Bear Lake MN), Tacky microspheres having pendant hydrophilic polymeric or oligomeric moieties.
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